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. Author manuscript; available in PMC: 2008 May 15.
Published in final edited form as: Exp Cell Res. 2007 Mar 12;313(9):1820–1829. doi: 10.1016/j.yexcr.2007.02.031

Figure 1.

Figure 1

Changes in morphology and proliferation of human mesenchymal stem cells (hMSCs) cultured on nano-gratings. Scanning electron micrographs of (A) PDMS nano-patterned by replica molding; hMSCs cultured on (B) nano-patterned PDMS and (C) unpatterned PDMS. Confocal micrographs of F-actin-stained hMSCs on (D) nano-patterned PDMS and (E) unpatterned PDPS in hMSC proliferation medium; (F) nano-patterned PDMS and (G) unpatterned PDMS cultured in presence of 1μM of retinoic acid (RA). Bar = 500nm for A, 5 μm for B, 50 μm for C-G. (H) Cell alignment, elongation of cytoskeleton and nuclei and the BrdU incorporation of the hMSCs cultured on nano-patterned and unpatterned PDMS. Values are means ± SD for 4 samples of each substrate. * NA = not applicable